Proflow allows you to bolt a carburettor onto your LS engine using Proflow's LS mid-rise carburetted intake manifolds. These intake manifolds work on all GM LS, Gen III, or Gen IV engines equipped with rectangular or cathedral port cylinder heads. Available in a single or dual plane design, these manifolds use an O-ring cylinder head mounting flange to provide an OEM seal and make installation a snap. You'll also receive mounting bolts, washers, and pipe plugs for the manifold vacuum and MAP sensor port.

Features:

• Great for carbureted or throttle body EFI street applications 
• 2500-7000 RPM power band
• Raw or Black Coated
• 4150 Duel Plane Square bore flange 
• Optimized runner layout and constant cross sectional area - broad torque curve
• Cast aluminum construction - great manifold for centrifugal blower, turbocharged or NOS power adder applications
• Height (front) - 4.95" from front lifter valley cover to carb mounting flange
• Height (rear) - 5.47" from rear lifter valley cover to carb mounting flange
• Port size - 2.659" height x .918" wide
• Gaskets Bolts and Seals Included